Embroidering-machine.



M. SCHOENFELD.

EMBROIDERING MACHINE.

APPLICATION FILED SEPT. 19. 1910.

Patented May 18, 1915.

3 SHEETS-SHEET l- Wwm THE NORRIS PE FPS C0 PHOTQ-LITHO., WASHINGTON M. SCHOENFELD.

EMBROIDERING MACHINE.

APPLICATION FILED SEPT-19.19l0.

Patented May 18, 1915.

3 SHEETS-SHEET 2- 7H5 NORRIS PETERS c0., PHOTO-LITHO WASHING TON. u. C.

M. SCHOENFELD.

EMBROIDERING MACHiNE.

APPLICATION FILED SEPT. 19. I910.

3. 91 9 586e Patented May 18, 1915.

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MORRIS SCHOENFELD, 0F BORSCHACI-I, SWITZERLAND.

EMBROIDER-ING-MACHINE.

Application filed. September 19, 1910.

To all whom it may concern.-

Be it known that I, Monnrs SoHoENrnLD, a citizen of the United States of America, residing at Rorschach, Switzerland, have invented certain new and useful Improvements in Embroidering-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and the letters or figures of reference marked thereon, which form a part of this specification.

For driving the actuating mechanisms of the various operative-devices of embroidering machines it has hitherto been the practice to provide a number of shafts, or bars extending throughout the length of the machine. At certain parts of these shafts, or bars, a portion of the driving power is taken and is transmitted to the needles or other operative-devices by means of suitable gear. The shafts, or bars, receive their motion from the main drive of the machine, either at the left-hand end of the framing, or at both ends thereof, according to the particular type. This method requires great concentration of the power at the place from which the driving is done, so that very large dimensions for the driving parts are necessary, whereby there is very rapid wear and tear at parts where there is friction. Furthermore, the reciprocatory mo- 5 tion of horizontal bars, for instance in the case of shuttle operating mechanism, causes serious shocks in the entire machine, owing to their moving to and fro in regular time. This drawback is naturally the more serious the greater the number of rows of needles.

Formerly it was usual to employ only two rows of superimposed needles, in modern practice as many as six superimposed rows are often used. So many rows of shuttles reciprocated to and fro simultaneously, in

mitting the driving power for the groups of operative-devices direct from the main drive, first in horizontal direction throughout the machine, and by then dividing it into a number of separate powers which are branched off at several places in vertical direction to the groups of operative-devices.

Specification of Letters Patent.

Patented May 18, 1615.

Serial No. 582,810.

Certain embodiments of my invention are illustrated in the accompanying drawing, wherein Figure 1 is a cross section, and Fig. 2 a front elevation of a machine embodying my invention, Fig. 3 is a cross section, and Fig.

4 a front elevation of a modified form of machine.

Referring in detail to the construction illustrated in Figs. 1 and 2, the main shaft 1 of the machine is journaled in one of the uprights or standards 2 of the machine frame near the base. Motion of this shaft is transmitted to a shaft 1, journaled in the upper part of the same upright, by means of sprocket wheels 19, 19 mounted respectively on the shaft 1, 1 which sprockets are connected by a chain 19 shown in dotted lines. Each shaft has fixed on its inner end, a grooved cam 5, 5, respectively which are engaged by pins on the free ends of levers 16, 16 which are fixed on longitudinal shafts 17 17 respectively, journaled in the machine frame. The common practice has been to mount a single cam at one end of the main shaft, or, in case of very large machines, a cam has been mounted at each end of the main shaft. The motion received by the cranks 16, 16 is imparted to actuator rods 11, which carry needle bars 12, by means of the shafts 17, 17, levers 18 fixed on the latter and connected together by rods 9 which are pivotally connected to one of the arms of bell-crank levers 10 journaled on the frame, the other arms of said bell-crank levers being slidably connected with said actuator rods 11.

In the construction shown in Fig. 1, the rods 9 act as compression rods when the needles enter the fabric indicated by dotted lines a'm. There is also shown in said Fig. 1 mechanism for imparting to the shuttle courses 20, a reciprocating motion to and from the fabric :0, w, for the well known purposes. A shaft 22 runs throughout the entire length of the machine and is provided at a suitable place with a hand lever (not shown) whereby it can be rocked. On the shaft 22 there are also fixed, at suitable distances apart, levers 23 from each of which there extends a rod 24 to which are jointed one of the ends of a number of crank levers 25 fulcrumed on the standards 3 of the machine frame. The other ends 26 of the bellcrank levers are connected by links 27 to prism-shaped guide bars 21 which are slidably mounted in bearings on the standards 3 and carry the shuttle courses 20. Thus if the'shaft 22 is rocked by means of said hand lever, the lever-system above described will assume the positions indicated in' dotted lines 23, 26, 27 and the shuttle courses 20 moved backward.

In the modified form of machine, shown in Figs. 3 and 4: the actuator rods 11 are reciprocated by the following described'meche anism. 7 Fixed on the rock shafts 17, 17 are a plurality of two-armed levers 18, the two ends of which are connected together by rods 9 and to these rods are pivotally connected two arms of a plurality ofthree-armed levers 10 which are pivotally mounted on the standards 4:; the third arm of each of said levers 10 being provided with a longitudinal slot into which projects a pin on the actuator rods 11. The connecting rods 9 may be made very thin as they are under tension only. The view through the various mechanisms is thus much less obstructed than when thick cast-iron compression rods are employed, hence the work is more easily ingroups receiving its drive from the main driving means independently of the other group, a plurality of rows of superimposed operative devices, vertical motion transmitting means each operatively connected at its upper end to one of said groups and at its lower end to the other of said groups, and v a plurality of means on said vertical means each transmitting the'motion of a vertical means to a row of operative devices,

2. In a shuttle embroidering-machine,

main driving means provided at one side of the machlne, supplementary drlving means extending over the whole length of the machine, and provided at the upper and lower end of the machine respectively, the upper supplementary driving means receiving their drive from the main driving means inp dependently from thedrive for the lower 7 driving means, a plurality of rows of su- 7 for the needle bars, 'substanti'ally as del scribed- 7 8. In a shuttle embroidering machine, a mainhorizontal driving shaft, a horizontal auxiliary rock shaft," means actuatedby the main shaft for rocking the auxiliary shaft,

groups of'operativedevices, a' plurality of levers mounted at suitable distances, apart throughout the length of the auxiliaryshaft, and a plurality of leversfortransmitting the'motion of the latter to thegroups of operative devices. I

4. Ina shuttle embroldering mac'hine, a

horizontal driving shaft,"a horizontal auxiliary shaft mounted at the bottom of the machine, a second auxiliary shaft mounted at the top of the latter; means actuated by the main shaft for IOOklHg the two auxiliary shafts simultaneously, groups ofv operative devices, a plurality of double-armed levers mounted" at suitable distances apart throughout thelength of each rock-shaft, pairs of I tension-rods connecting each double-armed lever oftne one rock-sh'aft' with the corresponding lever of the other rock-shaft, and

pair ofrods to different groups ofthe operative devices, substantially as described.

In testimony that I claim the foregoing as my invention, I have signed my namel in presence of two subscribing witnesses.

MORRIS SCHOENFELD. Witnesses:

CAsPAR LOEB, I FRIEDRICH STEINER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents;

, Washington, D; G. r

means-for transmitting the motion of each 

